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Diffstat (limited to 'protocol/wlr-screencopy-unstable-v1.xml')
| -rw-r--r-- | protocol/wlr-screencopy-unstable-v1.xml | 179 |
1 files changed, 179 insertions, 0 deletions
diff --git a/protocol/wlr-screencopy-unstable-v1.xml b/protocol/wlr-screencopy-unstable-v1.xml new file mode 100644 index 00000000..a7a2d172 --- /dev/null +++ b/protocol/wlr-screencopy-unstable-v1.xml @@ -0,0 +1,179 @@ +<?xml version="1.0" encoding="UTF-8"?> +<protocol name="wlr_screencopy_unstable_v1"> + <copyright> + Copyright © 2018 Simon Ser + + Permission is hereby granted, free of charge, to any person obtaining a + copy of this software and associated documentation files (the "Software"), + to deal in the Software without restriction, including without limitation + the rights to use, copy, modify, merge, publish, distribute, sublicense, + and/or sell copies of the Software, and to permit persons to whom the + Software is furnished to do so, subject to the following conditions: + + The above copyright notice and this permission notice (including the next + paragraph) shall be included in all copies or substantial portions of the + Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER + DEALINGS IN THE SOFTWARE. + </copyright> + + <description summary="screen content capturing on client buffers"> + This protocol allows clients to ask the compositor to copy part of the + screen content to a client buffer. + + Warning! The protocol described in this file is experimental and + backward incompatible changes may be made. Backward compatible changes + may be added together with the corresponding interface version bump. + Backward incompatible changes are done by bumping the version number in + the protocol and interface names and resetting the interface version. + Once the protocol is to be declared stable, the 'z' prefix and the + version number in the protocol and interface names are removed and the + interface version number is reset. + </description> + + <interface name="zwlr_screencopy_manager_v1" version="1"> + <description summary="manager to inform clients and begin capturing"> + This object is a manager which offers requests to start capturing from a + source. + </description> + + <request name="capture_output"> + <description summary="capture an output"> + Capture the next frame of an entire output. + </description> + <arg name="frame" type="new_id" interface="zwlr_screencopy_frame_v1"/> + <arg name="overlay_cursor" type="int" + summary="composite cursor onto the frame"/> + <arg name="output" type="object" interface="wl_output"/> + </request> + + <request name="capture_output_region"> + <description summary="capture an output's region"> + Capture the next frame of an output's region. + + The region is given in output logical coordinates, see + xdg_output.logical_size. The region will be clipped to the output's + extents. + </description> + <arg name="frame" type="new_id" interface="zwlr_screencopy_frame_v1"/> + <arg name="overlay_cursor" type="int" + summary="composite cursor onto the frame"/> + <arg name="output" type="object" interface="wl_output"/> + <arg name="x" type="int"/> + <arg name="y" type="int"/> + <arg name="width" type="int"/> + <arg name="height" type="int"/> + </request> + + <request name="destroy" type="destructor"> + <description summary="destroy the manager"> + All objects created by the manager will still remain valid, until their + appropriate destroy request has been called. + </description> + </request> + </interface> + + <interface name="zwlr_screencopy_frame_v1" version="1"> + <description summary="a frame ready for copy"> + This object represents a single frame. + + When created, a "buffer" event will be sent. The client will then be able + to send a "copy" request. If the capture is successful, the compositor + will send a "flags" followed by a "ready" event. + + If the capture failed, the "failed" event is sent. This can happen anytime + before the "ready" event. + + Once either a "ready" or a "failed" event is received, the client should + destroy the frame. + </description> + + <event name="buffer"> + <description summary="buffer information"> + Provides information about the frame's buffer. This event is sent once + as soon as the frame is created. + + The client should then create a buffer with the provided attributes, and + send a "copy" request. + </description> + <arg name="format" type="uint" summary="buffer format"/> + <arg name="width" type="uint" summary="buffer width"/> + <arg name="height" type="uint" summary="buffer height"/> + <arg name="stride" type="uint" summary="buffer stride"/> + </event> + + <request name="copy"> + <description summary="copy the frame"> + Copy the frame to the supplied buffer. The buffer must have a the + correct size, see zwlr_screencopy_frame_v1.buffer. The buffer needs to + have a supported format. + + If the frame is successfully copied, a "flags" and a "ready" events are + sent. Otherwise, a "failed" event is sent. + </description> + <arg name="buffer" type="object" interface="wl_buffer"/> + </request> + + <enum name="error"> + <entry name="already_used" value="0" + summary="the object has already been used to copy a wl_buffer"/> + <entry name="invalid_buffer" value="1" + summary="buffer attributes are invalid"/> + </enum> + + <enum name="flags" bitfield="true"> + <entry name="y_invert" value="1" summary="contents are y-inverted"/> + </enum> + + <event name="flags"> + <description summary="frame flags"> + Provides flags about the frame. This event is sent once before the + "ready" event. + </description> + <arg name="flags" type="uint" enum="flags" summary="frame flags"/> + </event> + + <event name="ready"> + <description summary="indicates frame is available for reading"> + Called as soon as the frame is copied, indicating it is available + for reading. This event includes the time at which presentation happened + at. + + The timestamp is expressed as tv_sec_hi, tv_sec_lo, tv_nsec triples, + each component being an unsigned 32-bit value. Whole seconds are in + tv_sec which is a 64-bit value combined from tv_sec_hi and tv_sec_lo, + and the additional fractional part in tv_nsec as nanoseconds. Hence, + for valid timestamps tv_nsec must be in [0, 999999999]. The seconds part + may have an arbitrary offset at start. + + After receiving this event, the client should destroy the object. + </description> + <arg name="tv_sec_hi" type="uint" + summary="high 32 bits of the seconds part of the timestamp"/> + <arg name="tv_sec_lo" type="uint" + summary="low 32 bits of the seconds part of the timestamp"/> + <arg name="tv_nsec" type="uint" + summary="nanoseconds part of the timestamp"/> + </event> + + <event name="failed"> + <description summary="frame copy failed"> + This event indicates that the attempted frame copy has failed. + + After receiving this event, the client should destroy the object. + </description> + </event> + + <request name="destroy" type="destructor"> + <description summary="delete this object, used or not"> + Destroys the frame. This request can be sent at any time by the client. + </description> + </request> + </interface> +</protocol> |